Use of Ascorbic Acid for Freezing of Canine Semen of Fertile and Sub-fertile Dogs - Lopes, B. V. [UNESP]; Chirinea, V. H. [UNESP]; Derussi, A. A. P. [UNESP]; Araujo, G. H. M. [UNESP]; Arduino, F. [UNESP]; Lopes, Maria Denise [UNESP] (Wiley-Blackwell Publishing, Inc, 2009)